Zeynep Tufekci

The shooter who killed 49 in New Zealand broadcast 17 minutes of his attack on Facebook. Watching and sharing videos like this inspire future killers and is disrespectful to victims, says a technology professor.

Like many people in Chapel Hill, North Carolina, social scientist Zeynep Tufekci was shocked by the killing of three Muslim students there in February. At a hastily organized vigil the following night, she was reminded of the power of community in addressing problems.

We need to be moving to a model where activists demand "no representation without conversation," said Zeynep Tufekci in a discussion about privacy, social media censorship, hashtag activism and global youth protests at the South by Southwest festival in Austin.

Gezi Park. Tahrir Square. Hong Kong. Ferguson. What form is youth activism taking and how is it different from what came before? The World brings you a multimedia experience from South by Southwest in Austin as part of our #SafeMode series.

Turkey is one of the most wired societies in Europe. But Turkey's government is cracking down on online activities. Zeynep Tufekci of the University of North Carolina, Chapel Hill, says new legislation will block online access and require Internet providers to store data on web users' activities.

Around the world, revelations about NSA spying have caused outrage and protests. But not so much in the US. In fact, older Americans seem more worried than digitally plugged-in youth, whose electronic lives are being monitored. One researcher says young people don't seem so worried about the government acting as Big Brother.

The abducted Nigerian girls remain front-and-center for the international media. But Zeynep Tufekci of University of North Carolina, Chapel Hill warns that all the global attention could backfire and end up empowering Boko Haram.

Many Facebook users were upset the company experimented on the emotional states of 689,000 users without their consent. For dictators, this just gave them more fodder to convince the public Facebook is evil.

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